Valve-grinding tool.



A. WAGNER. VALVE GRIN DING TOQL. APPLICATION FILED OCT. 24, 1916.

Patented Apr. 17, 191?.

C1 Honnclyv A AUGUST WAGNER, OF BUFFALO, MINNESOTA.

VALVE-GRINDING TOOL.

Specification of Letters Patent.

Patented Apr. 17, 1917.

Application filed October 24, 1916. Serial No. 127,407.

To all whom it may concern:

Be it known that I, ALGUs'r \VAoxnu, a citizen of the United States, residing at Buffalo, in the county of \Vright, State of Minnesota, have invented certain new and useful Improvements in Valve-Grinding Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to valve grinding and has special reference to a tool for holding such valves as those of automobiles and other gas engines when they are being ground into place.

In the ordinary type of device used for this purpose the holding device has no means of raising the valve from its seat in order to rotate it during the successive stages of the grinding operation and it becomes necessary to lift the valve and turn it by the employment of a screw driver, knife or other tool, this turning operation being essential toprevent circular scores or grooves being made in the valve or valve seat.

The important object of the present invention is to provide a device which will not only hold a device so that it can be turned. when seated on its seat for the purpose of grinding the same but will also enable the valve to be picked up by the device so that the seat and valve may be wiped off and a fresh coating of the grinding compound applied thereto, from time to time, the valve being turned around before replacement so that only a few strokes are given in the grinding operation at any one place.

With the above and other objects in view, as will be hereinafter apparent the invention consistsin general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawing, and specifically claimed.

In the accompanying drawing, like characters-.of reference indicate like parts in the several views, and

Figure 1 is a perspective view of the complete device.

Fig. 2 is a detail section through theideviceshowing the adjusting bolt and spring.

Fig. 3 is a detail section through the lower part of the device showing the pivotal connection of the two members.

Fig. 4 is a perspective view of the movof the distances between the able jaw of the device removed from its connections.

In carrying out the objects of this invention there is provided a pair of members one of which is provided with a body 1.0 wherein is formed a longitudinal channel 11, the body further having a socket 12 at its upper endfor the reception of a handle 13 of any desired form.

Through this body 10 just below th socket 12 extends an opening 14 for the reception of a bolt 15 havingone end threaded as at 16 while the other end is forked as at 17. The body 10 is provided on one side with a boss 17' so that a butterfly nut 18 appliedto the this boss.

The remainlng member is provided with threaded end 16 will seat on a body 19 which is mounted for rocking movement in the channel or groove 11 by means of a pivot pin 20. The upper end of this member is offset as at 21 and is reduced as at 22, the reduced portion being received between the arms of the fork 17 and held therein by means of a pin through said fork and through a slot 24.- formcd in the reduced end 22 so that movement of the bolt 15 through the opening 14 will be permitted by reason of the pin 23 working in the slot 24;. Surrounding the bolt 15 between the end 21 and the body 10 is a coil spring 2.) which normally urges said end 21 away from the body 10.

The lower end of each of'the members is offset as at 26 and 27 and each of these offset ends is provided on its underface with a stud or pin 28 adapted to enter one of the usual recesses formed in the upper side of a gas engine valve for the the same in grinding.

By means of this construction adjustment pin 28 may be effected bymeans of the nut 18 and when purpose of rotating thus effected the pins may be inserted in the recesses and the nut screwed in such direction as to force the pins against the remote portions of the walls of the recesses and thus tightly fix the valve onto the tool. Then the valve may be rotated in the ordinary manner and when desired to lift it it may done as may be obvious.

There has thus been provided asimple and eflicient device of the kind described and for the purposespecified. A

It is obvious that many minor changes may be made in the form and construction 23 passing be readily of the invention without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described but it is wished to include all such as properly come within the scope claimed.

Having thus described the invention what is claimed, as new, 'is:

A valve grinding tool comprising a pair of members one of which is provided with a body portion having a channel extending longitudinally thereof and a socket at one end, said member being further provided with a transverse. opening extending therethrough between the channel and socket, the other member having a body portion mounted for rocking movementin said channel and having one end provided with an offset upward] y turned portion, said upwardly turned portion having a reduced end provided With a longitudinally extending slot, a bolt pass ing through the opening in the first member and having a forked end embracing said reduced end, a pivot passing through the forked end and slot, a spring surrounding said bolt between said members, a thumb nut on said bolt on the side of the first member opposite the springs, and a valve recess engaging pin on the remaining end of each of said members.

I11 testimony whereof, I affix my signature, in the presence of two Witnesses.

AUGUST WVAGNER. Witnesses:

H. E. W'EsT, WM. WAGNER. 

